From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 18 Mar 2014 17:19:15 +0000 (+0000)
Subject: can: c_can: Avoid led toggling for every packet.
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=b1d8e431bd5639c03ff99d08fd2d5d621969bdc5;p=openwrt%2Fstaging%2Fblogic.git

can: c_can: Avoid led toggling for every packet.

There is no point to toggle the RX led for every packet. Especially if
we have a full FIFO we want to avoid everything we can.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---

diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c
index 42c038d523c9..01dc4941e3d0 100644
--- a/drivers/net/can/c_can/c_can.c
+++ b/drivers/net/can/c_can/c_can.c
@@ -433,9 +433,6 @@ static int c_can_read_msg_object(struct net_device *dev, int iface, int ctrl)
 
 	stats->rx_packets++;
 	stats->rx_bytes += frame->can_dlc;
-
-	can_led_event(dev, CAN_LED_EVENT_RX);
-
 	return 0;
 }
 
@@ -901,6 +898,10 @@ static int c_can_do_rx_poll(struct net_device *dev, int quota)
 		pkts += n;
 		quota -= n;
 	}
+
+	if (pkts)
+		can_led_event(dev, CAN_LED_EVENT_RX);
+
 	return pkts;
 }